package com.fitzone.web.interceptor;

import com.fitzone.common.context.UserContext;
import com.fitzone.common.exception.BaseException;
import com.fitzone.common.utils.JwtUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * jwt令牌校验的拦截器
 */
@Slf4j
@Component
public class JwtTokenUserInterceptor implements HandlerInterceptor {

    /**
     * 校验jwt
     */
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        //判断当前拦截到的是Controller的方法还是其他资源
        if (!(handler instanceof HandlerMethod)) {
            //当前拦截到的不是动态方法，直接放行
            return true;
        }

        log.info("前台拦截uri：" + request.getRequestURI());
        String token = request.getHeader("token");
        Long userId = JwtUtil.getUserId(token);
        if (userId != null) {
            UserContext.setCurrentId(userId);
            return true;
        } else {
            throw new BaseException("用户未登录");
        }
    }

}
